<!DOCTYPE html>
<html>
    <head>
        <meta charset="utf-8">
        <title>疯狂赛车</title>
        <style>
            body{
                background-color:aqua;
                background-image: url("https://hdwallpaperim.com/wp-content/uploads/2017/08/25/122063-cuttlefish-aquarium-748x468.jpg");
                background-repeat: no-repeat;
                background-position: right top;
                margin-right: 200px;
                margin-top: 300px;
            }
            h1{
                background-color: blue;
            }
            div{
                background-color: aliceblue;
            }
            p{
                background-color: aquamarine;
            }

        </style>
    </head>
    <body>
        <h1>我的世界</h1>
        <p>你好世界</p>
        <div>div元素内容</div>
    </body>
</html>